S-8077A871 3/4"-10 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance in heavy-duty applications.
• Precise alignment and smooth rotation ensured by the Class 3A thread fit and standard shoulder, reducing wear and assembly errors.
• Enhanced grip and easy handling from the knurled head texture, facilitating secure installation and removal.
• Durable, wear-resistant surface with Black Oxide finish, providing added protection against abrasion and minimal galling.
• Broad compatibility and reliable fit due to compliance with ASME B18.3 standards and UNC coarse threading for efficient assembly.
• Safe for sensitive applications as it meets RoHS 3 and REACH regulations, ensuring environmental and health compliance.

Professional Applications & Engineering Value

This 316 Stainless Steel Shoulder Screw with a Black Oxide finish is engineered to address critical challenges in precision machinery, automation systems, and heavy industrial equipment. The Class 3A thread fit and coarse UNC threading ensure quick, secure fastening with minimal risk of cross-threading, while the precisely machined shoulder provides stable bearing surfaces for rotating components like gears and pulleys. Its high tensile and shear strength withstands dynamic loads, reducing failure in high-stress environments. The knurled head enhances torque application during installation, making it ideal for assembly lines where speed and reliability are paramount. By combining robust material properties with strict dimensional tolerances, this screw minimizes maintenance downtime and improves overall system integrity in applications from automotive to aerospace.

Specification Summary & Compliance

This shoulder screw features a 3/4"-10 UNC thread with Class 3A fit for high precision, and dimensional tolerances include shoulder diameter of 7/8" (-0.004" to -0.002") and shoulder length of 2" (-0.005" to 0.005"). It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international safety and environmental standards.